{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "84597a44a9d86ac949900441cea7da0af0f2f473"
            },
            {
              "fixed": "5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775"
            },
            {
              "fixed": "6228722c27304e4682cddc1fede03898f87e4414"
            },
            {
              "fixed": "68c5c42567bc462139128968ebbfadd0aefff519"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.7.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90333.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: replace forgeable discard filler with a keyed sector marker\n\nThe discard-block check in dm_integrity_rw_tag() treats a stored tag\nof all 0xf6 bytes (DISCARD_FILLER) as proof a block was discarded and\nskips HMAC verification. allow_discards is only accepted in\ndm-integrity's standalone mode. An attacker with raw write access to\nthe backing device, but without the integrity key, can stamp any block\nwith an all-0xf6 tag and have it served as authentic.\n\nAdd a new \"allow_discards_keyed\" target argument that marks discarded\nblocks with a keyed checksum of (salt || sector) instead, computed by\nintegrity_discard_checksum().",
  "id": "CVE-2026-90333",
  "modified": "2026-09-19T03:30:32.205019277Z",
  "published": "2026-09-17T16:08:46.805Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6228722c27304e4682cddc1fede03898f87e4414"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68c5c42567bc462139128968ebbfadd0aefff519"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90333.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90333"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "dm-integrity: replace forgeable discard filler with a keyed sector marker"
}